PGG is somewhat outdated PGP library used by Gnus, MH-E, etc.
There is a PGG backend using EasyPG called pgg-epg.el. However,
-through the pgg-epg.el you can't benefit of the power of the EasyPG
-Library, because the PGG API is restricted so that it supports old PGP
-2.x/5.x.
+pgg-epg.el provides no more additional features than pgg-gpg.el,
+because the PGG API is restricted so that it supports old PGP 2.x/5.x.